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https://github.com/abseil/abseil-cpp.git
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9ebd93a774
prior to C++17. `absl::string_view` is now an alias for `std::string_view`. It is recommended that clients simply use `std::string_view`. PiperOrigin-RevId: 845822478 Change-Id: I220530c84118e5b9ef110baa002c232ac8f2c5f2
87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
// Copyright 2017 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "absl/strings/string_view.h"
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#include <array>
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#include <cstddef>
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#include <cstdlib>
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#include <cstring>
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#include <iomanip>
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#include <ios>
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#include <iterator>
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#include <limits>
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#include <map>
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#include <memory>
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#include <sstream>
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#include <string>
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#include <type_traits>
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#include <utility>
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#include "gtest/gtest.h"
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#include "absl/base/config.h"
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#include "absl/meta/type_traits.h"
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namespace {
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TEST(StringViewTest, TruncSubstr) {
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const absl::string_view hi("hi");
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EXPECT_EQ("", absl::ClippedSubstr(hi, 0, 0));
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EXPECT_EQ("h", absl::ClippedSubstr(hi, 0, 1));
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EXPECT_EQ("hi", absl::ClippedSubstr(hi, 0));
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EXPECT_EQ("i", absl::ClippedSubstr(hi, 1));
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EXPECT_EQ("", absl::ClippedSubstr(hi, 2));
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EXPECT_EQ("", absl::ClippedSubstr(hi, 3)); // truncation
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EXPECT_EQ("", absl::ClippedSubstr(hi, 3, 2)); // truncation
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}
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TEST(StringViewTest, NullSafeStringView) {
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{
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absl::string_view s = absl::NullSafeStringView(nullptr);
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EXPECT_EQ(nullptr, s.data());
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EXPECT_EQ(0u, s.size());
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EXPECT_EQ(absl::string_view(), s);
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}
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{
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static const char kHi[] = "hi";
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absl::string_view s = absl::NullSafeStringView(kHi);
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EXPECT_EQ(kHi, s.data());
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EXPECT_EQ(strlen(kHi), s.size());
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EXPECT_EQ(absl::string_view("hi"), s);
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}
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}
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TEST(StringViewTest, ConstexprNullSafeStringView) {
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{
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constexpr absl::string_view s = absl::NullSafeStringView(nullptr);
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EXPECT_EQ(nullptr, s.data());
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EXPECT_EQ(0u, s.size());
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EXPECT_EQ(absl::string_view(), s);
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}
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{
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static constexpr char kHi[] = "hi";
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absl::string_view s = absl::NullSafeStringView(kHi);
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EXPECT_EQ(kHi, s.data());
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EXPECT_EQ(strlen(kHi), s.size());
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EXPECT_EQ(absl::string_view("hi"), s);
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}
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{
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constexpr absl::string_view s = absl::NullSafeStringView("hello");
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EXPECT_EQ(s.size(), 5u);
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EXPECT_EQ("hello", s);
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}
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}
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} // namespace
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